Hi Alex,
the problem ist that the template looks like this and should deal with phone but uses email – see wordpress image of the contact form,
[email* your-email placeholder “hone” ]
With “email* your-email” the right validation can not take place – and “hone” is a typo.
I tried to change it to
[tel* your-phone placeholder “Phone”]
In this case I loose the css style .
The error is also on your demo site, shown with chrome debugger mode image
Thanks & Best regards, Joachim